805 Hydroponics & Organics :: pH/EC Maintenance :: PH Solutions

PH4 Calibration Solution, 16 oz

Excellent Choice Hanna's Buffer solutions are made from established formulas and are standardized with a pH meter that is calibrated to NBS/NIST primary standard buffer solutions. The 20 mL sachets are ideal for infrequent calibrations while for heavy-duty applications, you can choose from the popular 230 mL, 1 liter or 1 gallon containers. Now the pH 4 buffers carry lot #, expiry date as well as pH/C chart on every bottle. HI 7004L/C and HI 8004L/C are also supplied with an analysis certificate.
NIST Traceability
The ingredients of Hanna pH 4 buffers are Potassium Hydrogen Phthalate. They are standardized using a pH meter calibrated by primary standard buffer solutions (NIST 186 Ie, NIST 186 IIe and NIST 185g S.R.M.). The pH value is certified traceable to NIST 185g S.R.M

SKU HI7004L

Weight 1.10 lbs

Our price: $17.95

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